Ours are set up heavy stock on the bottom, light/lesser used stuff on the top; unopened syrup cases on the bottom, syrup shelf about eye level, coffees (lb bags) just above, tea boxes/promo coffees on top.
Next section: cases of mocha mix/frapp syrups/Pike 5 lbs on bottom, chi concentrates/vanilla powder/protein powder/matcha/java chips/caramel sauce about waist high, oatmeal packets/fruit mix/seed & nut mix/brown sugar/agave at eye level, tea bags/vias/refresher dried fruit/Kcups on top.
Next section: cups & lids: cold cups on bottom with sizes tall-trenta, hot cups short-venti next shelf, lids/dones/straws on the next level, napkins/pastry bags/shop bags/oatmeal bowls & lids on top.
There's other items stowed around but it helps to group according to use & type.